diff --git a/.changeset/six-vans-rhyme.md b/.changeset/six-vans-rhyme.md
new file mode 100644
index 000000000..2ed765862
--- /dev/null
+++ b/.changeset/six-vans-rhyme.md
@@ -0,0 +1,10 @@
+---
+'@lion/button': minor
+'@lion/calendar': minor
+'@lion/core': minor
+'@lion/listbox': minor
+'@lion/overlays': minor
+'@lion/select-rich': minor
+---
+
+Remove differentKeyEventNamesShimIE, since IE11 isn't supported any more
diff --git a/packages/button/src/LionButton.js b/packages/button/src/LionButton.js
index f0cc97b89..571749b7f 100644
--- a/packages/button/src/LionButton.js
+++ b/packages/button/src/LionButton.js
@@ -1,5 +1,4 @@
 import { browserDetection, css, DisabledWithTabIndexMixin, html, LitElement } from '@lion/core';
-import '@lion/core/differentKeyEventNamesShimIE';
 
 const isKeyboardClickEvent = (/** @type {KeyboardEvent} */ e) => e.key === ' ' || e.key === 'Enter';
 const isSpaceKeyboardClickEvent = (/** @type {KeyboardEvent} */ e) => e.key === ' ';
diff --git a/packages/button/test-suites/LionButton.suite.js b/packages/button/test-suites/LionButton.suite.js
index 15ff25edc..2b7d19ded 100644
--- a/packages/button/test-suites/LionButton.suite.js
+++ b/packages/button/test-suites/LionButton.suite.js
@@ -1,7 +1,6 @@
 /* eslint-disable lit-a11y/click-events-have-key-events */
 import { LionButton } from '@lion/button';
 import { browserDetection } from '@lion/core';
-import '@lion/core/differentKeyEventNamesShimIE';
 import {
   aTimeout,
   defineCE,
diff --git a/packages/button/test-suites/LionButtonReset.suite.js b/packages/button/test-suites/LionButtonReset.suite.js
index a9a0a0ba0..ba46989ce 100644
--- a/packages/button/test-suites/LionButtonReset.suite.js
+++ b/packages/button/test-suites/LionButtonReset.suite.js
@@ -1,6 +1,5 @@
 /* eslint-disable lit-a11y/click-events-have-key-events */
 import { LionButtonReset } from '@lion/button';
-import '@lion/core/differentKeyEventNamesShimIE';
 import { aTimeout, defineCE, expect, fixture, html, unsafeStatic } from '@open-wc/testing';
 import sinon from 'sinon';
 
diff --git a/packages/button/test-suites/LionButtonSubmit.suite.js b/packages/button/test-suites/LionButtonSubmit.suite.js
index f294c911b..a1d9ce15c 100644
--- a/packages/button/test-suites/LionButtonSubmit.suite.js
+++ b/packages/button/test-suites/LionButtonSubmit.suite.js
@@ -1,6 +1,5 @@
 /* eslint-disable lit-a11y/click-events-have-key-events */
 import { LionButtonSubmit } from '@lion/button';
-import '@lion/core/differentKeyEventNamesShimIE';
 import { aTimeout, defineCE, expect, fixture, html, unsafeStatic } from '@open-wc/testing';
 import { sendKeys } from '@web/test-runner-commands';
 import sinon from 'sinon';
diff --git a/packages/calendar/src/LionCalendar.js b/packages/calendar/src/LionCalendar.js
index 7e4e8037c..48b99b4f7 100644
--- a/packages/calendar/src/LionCalendar.js
+++ b/packages/calendar/src/LionCalendar.js
@@ -8,7 +8,6 @@ import {
   normalizeDateTime,
 } from '@lion/localize';
 
-import '@lion/core/differentKeyEventNamesShimIE';
 import { calendarStyle } from './calendarStyle.js';
 import { createDay } from './utils/createDay.js';
 import { createMultipleMonth } from './utils/createMultipleMonth.js';
diff --git a/packages/core/differentKeyEventNamesShimIE.js b/packages/core/differentKeyEventNamesShimIE.js
deleted file mode 100644
index 6989ddbf2..000000000
--- a/packages/core/differentKeyEventNamesShimIE.js
+++ /dev/null
@@ -1 +0,0 @@
-import './src/differentKeyEventNamesShimIE.js';
diff --git a/packages/core/package.json b/packages/core/package.json
index 2a41fd77e..e91fccdf6 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -32,8 +32,7 @@
     "test": "cd ../../ && npm run test:browser -- --group core"
   },
   "sideEffects": [
-    "./closestPolyfill.js",
-    "./differentKeyEventNamesShimIE.js"
+    "./closestPolyfill.js"
   ],
   "dependencies": {
     "@open-wc/dedupe-mixin": "^1.3.0",
@@ -51,7 +50,6 @@
     ".": "./index.js",
     "./test-helpers": "./test-helpers/index.js",
     "./closestPolyfill": "./src/closestPolyfill.js",
-    "./differentKeyEventNamesShimIE": "./src/differentKeyEventNamesShimIE.js",
     "./docs/*": "./docs/*"
   }
 }
diff --git a/packages/core/src/differentKeyEventNamesShimIE.js b/packages/core/src/differentKeyEventNamesShimIE.js
deleted file mode 100644
index c62b5e8c5..000000000
--- a/packages/core/src/differentKeyEventNamesShimIE.js
+++ /dev/null
@@ -1,40 +0,0 @@
-if (typeof window.KeyboardEvent !== 'function') {
-  // e.g. is IE and needs "polyfill"
-  const event = KeyboardEvent.prototype;
-  const descriptor = Object.getOwnPropertyDescriptor(event, 'key');
-  if (descriptor) {
-    /** @type {Object.<string, string>} */
-    const keys = {
-      Win: 'Meta',
-      Scroll: 'ScrollLock',
-      Spacebar: ' ',
-
-      Down: 'ArrowDown',
-      Left: 'ArrowLeft',
-      Right: 'ArrowRight',
-      Up: 'ArrowUp',
-
-      Del: 'Delete',
-      Apps: 'ContextMenu',
-      Esc: 'Escape',
-
-      Multiply: '*',
-      Add: '+',
-      Subtract: '-',
-      Decimal: '.',
-      Divide: '/',
-    };
-    Object.defineProperty(event, 'key', {
-      // eslint-disable-next-line object-shorthand, func-names
-      get: function () {
-        if (descriptor.get) {
-          const key = descriptor.get.call(this);
-
-          // eslint-disable-next-line no-prototype-builtins
-          return keys.hasOwnProperty(key) ? keys[key] : key;
-        }
-        return undefined;
-      },
-    });
-  }
-}
diff --git a/packages/listbox/src/ListboxMixin.js b/packages/listbox/src/ListboxMixin.js
index 1e12d051d..68441b932 100644
--- a/packages/listbox/src/ListboxMixin.js
+++ b/packages/listbox/src/ListboxMixin.js
@@ -1,6 +1,5 @@
 import { css, dedupeMixin, html, ScopedElementsMixin, SlotMixin } from '@lion/core';
 import '@lion/core/closestPolyfill';
-import '@lion/core/differentKeyEventNamesShimIE';
 import { ChoiceGroupMixin, FormControlMixin, FormRegistrarMixin } from '@lion/form-core';
 import { LionOptions } from './LionOptions.js';
 
diff --git a/packages/listbox/test-suites/ListboxMixin.suite.js b/packages/listbox/test-suites/ListboxMixin.suite.js
index 7b484e3f5..22ab53ab1 100644
--- a/packages/listbox/test-suites/ListboxMixin.suite.js
+++ b/packages/listbox/test-suites/ListboxMixin.suite.js
@@ -1,5 +1,4 @@
 import { LitElement, repeat } from '@lion/core';
-import '@lion/core/differentKeyEventNamesShimIE';
 import { Required } from '@lion/form-core';
 import { LionOptions } from '@lion/listbox';
 import '@lion/listbox/define';
diff --git a/packages/overlays/src/OverlayController.js b/packages/overlays/src/OverlayController.js
index 4117dccf8..e8b83902f 100644
--- a/packages/overlays/src/OverlayController.js
+++ b/packages/overlays/src/OverlayController.js
@@ -1,4 +1,3 @@
-import '@lion/core/differentKeyEventNamesShimIE';
 import { EventTargetShim } from '@lion/core';
 // eslint-disable-next-line import/no-cycle
 import { overlays } from './overlays.js';
diff --git a/packages/overlays/test/OverlayController.test.js b/packages/overlays/test/OverlayController.test.js
index 51304c27a..68857ea40 100644
--- a/packages/overlays/test/OverlayController.test.js
+++ b/packages/overlays/test/OverlayController.test.js
@@ -1,5 +1,4 @@
 /* eslint-disable no-new */
-import '@lion/core/differentKeyEventNamesShimIE';
 import { aTimeout, defineCE, expect, fixture, html, unsafeStatic } from '@open-wc/testing';
 import { fixtureSync } from '@open-wc/testing-helpers';
 import sinon from 'sinon';
diff --git a/packages/select-rich/src/LionSelectRich.js b/packages/select-rich/src/LionSelectRich.js
index a9593a481..94a9066f3 100644
--- a/packages/select-rich/src/LionSelectRich.js
+++ b/packages/select-rich/src/LionSelectRich.js
@@ -1,8 +1,6 @@
 import { LionListbox } from '@lion/listbox';
 import { html, ScopedElementsMixin, SlotMixin, browserDetection } from '@lion/core';
 import { OverlayMixin, withDropdownConfig } from '@lion/overlays';
-
-import '@lion/core/differentKeyEventNamesShimIE';
 import { LionSelectInvoker } from './LionSelectInvoker.js';
 
 /**
diff --git a/packages/select-rich/test/lion-select-rich-interaction.test.js b/packages/select-rich/test/lion-select-rich-interaction.test.js
index 4bc366560..eeb1a9d06 100644
--- a/packages/select-rich/test/lion-select-rich-interaction.test.js
+++ b/packages/select-rich/test/lion-select-rich-interaction.test.js
@@ -2,7 +2,6 @@ import { Required } from '@lion/form-core';
 import { expect, triggerBlurFor, triggerFocusFor, fixture } from '@open-wc/testing';
 import { html } from 'lit/static-html.js';
 import { browserDetection } from '@lion/core';
-import '@lion/core/differentKeyEventNamesShimIE';
 import '@lion/listbox/define';
 import '@lion/select-rich/define';
 
diff --git a/packages/select-rich/test/lion-select-rich.test.js b/packages/select-rich/test/lion-select-rich.test.js
index f68f47999..afbf6146f 100644
--- a/packages/select-rich/test/lion-select-rich.test.js
+++ b/packages/select-rich/test/lion-select-rich.test.js
@@ -1,5 +1,4 @@
 import { LitElement } from '@lion/core';
-import '@lion/core/differentKeyEventNamesShimIE';
 import { renderLitAsNode } from '@lion/helpers';
 import { LionOption } from '@lion/listbox';
 import '@lion/listbox/define';